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Boston Law Firm
with a National Reputation

Each Client Is Our Most Important Client

For aggressive representation and sound legal counsel, contact Jeffrey Denner & Associates. We are highly experienced in a wide range of practice areas, including criminal law, white collar crimes and the ensuing civil consequences of those crimes.

Call XXX-XXX-XXXX Request a Consultation
24/7 Availability
Multilingual Support
National Recognition

Featured In Leading Media Outlets

Boston Herald The New York Times MSNBC The Wall Street Journal CNN International Law & Crime The Guardian Channel 4 Media Logo Media Logo Media Logo Boston Herald The New York Times MSNBC The Wall Street Journal CNN International Law & Crime The Guardian Channel 4 Media Logo Media Logo Media Logo

Notable Victories

State Treasurer Case

State Treasurer Corruption

Commonwealth of Massachusetts vs. Timothy Cahill

Mistrial Declared, All Charges Dismissed

Big Dig Case

Big Dig Tunnel Collapse

Estate of Del Valle v. Multiple Defendants

$28.1 Million Awarded

Murder Case

High-Profile Murder Case

Commonwealth of Massachusetts v. Edmund Burke

All Charges Dismissed + $400K Award

Police Officer Case

Federal Police Officer Trial

U.S. vs. LaFleur

Not Guilty Verdict

Comprehensive Legal Defense

Our uniquely experienced team of lawyers, private investigators and forensic specialists are here to assist you with your needs.

Criminal Defense

Personal Injury

Civil Rights

Divorce & Family Law

Business Law

Military Law

View All Practice Areas

Expert Team & Resources

In addition, we consult with top experts in their fields, including forensic experts, investigators and psychologists. This combination of broad legal knowledge and specialized information allows us to build strong cases for our clients.

Private Investigators

Experienced investigators who gather crucial evidence and witness testimony to strengthen your defense.

Forensic Specialists

Expert analysis of physical evidence, DNA, fingerprints, and other forensic materials.

Forensic Psychologists

Psychological evaluation and expert testimony to support mental health defenses and mitigation.

Cyber Specialists

Digital forensics and cyber security experts for computer crime cases.

Accident Reconstruction

Specialists who recreate accident scenes and determine causation in vehicular cases.

Financial Experts

Accountants and tax specialists for white collar crime and financial fraud cases.

What Our Clients Say

"Facing a serious charge was terrifying, but Mr. Denner and his team were a beacon of hope. His expertise in the courtroom was evident, and he fought tirelessly for me. I am forever grateful for his dedication and the positive outcome."

Former Client

"When my civil rights were violated, I didn't know where to turn. Jeffrey Denner took my case seriously and navigated the complex legal system with skill and determination. He truly stands up for the little guy."

Civil Rights Client

"Jeffrey Denner has taken on an impossible situation for me. Attorney Denner will be there for you 24/7, make certain all is in order, has a phenomenal staff and goes the distance for his clients."

July 16, 2024

"Jeff handled a case for my wife that wasn't really within the scope of his practice. He, and his associates, litigated her case with the utmost professionalism and kindness I've never encountered with any other lawyer or law firm."

January 19, 2018

"Jeff was unbelievable in helping me with a serious legal issue I was facing. He was responsive, intelligent, and informative. He clearly explained all of my options in a way that was easy for me to understand."

March 31, 2013

"When my youngest daughter came to me with legal troubles I didn't know where to turn. I made appointments with several area attorneys but, after meeting Jeff, I knew that Jeffrey Denner & Associates was the firm for me."

March 9, 2012

"I hired Mr. Denner and his team to help me with a time sensitive criminal matter. Jeffrey was personable and professional and explained my options to me in a way that really made sense and calmed my nerves."

February 14, 2012

"Facing a serious charge was terrifying, but Mr. Denner and his team were a beacon of hope. His expertise in the courtroom was evident, and he fought tirelessly for me. I am forever grateful for his dedication and the positive outcome."

Former Client

"When my civil rights were violated, I didn't know where to turn. Jeffrey Denner took my case seriously and navigated the complex legal system with skill and determination. He truly stands up for the little guy."

Civil Rights Client

"Jeffrey Denner has taken on an impossible situation for me. Attorney Denner will be there for you 24/7, make certain all is in order, has a phenomenal staff and goes the distance for his clients."

July 16, 2024

"Jeff handled a case for my wife that wasn't really within the scope of his practice. He, and his associates, litigated her case with the utmost professionalism and kindness I've never encountered with any other lawyer or law firm."

January 19, 2018

"Jeff was unbelievable in helping me with a serious legal issue I was facing. He was responsive, intelligent, and informative. He clearly explained all of my options in a way that was easy for me to understand."

March 31, 2013

"When my youngest daughter came to me with legal troubles I didn't know where to turn. I made appointments with several area attorneys but, after meeting Jeff, I knew that Jeffrey Denner & Associates was the firm for me."

March 9, 2012

"I hired Mr. Denner and his team to help me with a time sensitive criminal matter. Jeffrey was personable and professional and explained my options to me in a way that really made sense and calmed my nerves."

February 14, 2012

Contact Jeffrey Denner & Associates

Our team advocates for clients in even the most complex and high-profile cases.

Call Our Boston Law Offices XXX-XXX-XXXX Request a Consultation

24/7 Availability: Calls are answered 24 hours a day, seven days a week.

Multilingual Support: Spanish, Portuguese, Russian, and South Asian languages.

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Criminal Defense

Schedule your confidential consultation with one of our experienced lawyers today. Our criminal defense attorneys provide comprehensive representation across all types of criminal matters, from white collar crimes to violent offenses, ensuring your constitutional rights are protected throughout the legal process.

We defend professionals and businesses against complex financial crimes, with extensive resources and access to financial investigators to maximize your chances for a successful outcome.

  • Theft and embezzlement
  • Mortgage fraud
  • Telemarketing fraud
  • Mail and wire fraud
  • Bank fraud
  • Securities fraud
  • Insider trading
  • Money laundering
  • Computer crimes
  • Internet crimes
  • Corporate compliance
  • Structured transactions

We mount vigorous defense for clients facing state and federal drug crime charges, from simple possession to conspiracy, working with professional investigators to challenge the prosecution's case.

Our extensive experience in both state and federal courts provides effective defense tactics to reduce criminal charges, minimize consequences, or gain acquittal at trial.

  • Assault & Battery
  • Robbery
  • Homicide Defense
  • Domestic Violence
  • Weapons Charges
  • Arson
  • Restraining order violations

We provide aggressive defense for sexual assault and other sex crime charges, working to prove innocence when possible, seek treatment when appropriate, and minimize punishment.

  • Rape
  • Child pornography
  • Solicitation and prostitution
  • Sexual Assault
  • Child Pornography

We work to reinstate driver's licenses and minimize consequences associated with motor vehicle violations.

  • DUI/DWI/OUI Defense
  • Vehicular Homicide
  • Administrative Hearing
  • Traffic Violations
  • Reckless Driving

We represent professionals in disciplinary proceedings before various licensing boards, protecting their professional reputation and livelihood.

  • Medical Board Hearings
  • Legal Ethics Proceedings
  • Financial Services Licensing
  • Real Estate Board Actions
  • Professional Standards Violations

We are strong advocates for college students and juveniles, believing that one mistake should not impact an entire lifetime of opportunities. We work to minimize long-term consequences and provide the legal counsel needed for a bright future.

Notable Case Results

21 Year Old College Athlete Acquitted of Rape

A Middlesex County Superior Court acquitted a 21 year old D-1 scholarship lacrosse player of an alleged date rape after deliberating for less than two hours. Our attorney successfully used Massachusetts' First Complaint (Fresh Complaint) Reporting Doctrine to establish reasonable doubt.

Result: Acquitted

Largest Private Embezzlement Case in Massachusetts History

A former office manager who embezzled almost $7 million from her employer faced a maximum prison exposure of at least 30 years and likely 7+ years under federal sentencing guidelines.

Result: 48 months in prison with substance abuse program eligibility for parole in 36 months or less

Intoxication and Consent in Rape Cases

Harvard University Graduate Dental Student accused of two counts of rape. Our attorney argued that trial court's instructions on intoxication and consent were inadequate and erroneous as a matter of law.

Result: Appeals Court reversed the conviction

Federal Money Laundering Scheme

Client accused of attempting to sell a $700,000 Ferrari to an undercover agent in an alleged money-laundering scheme. Our attorney contended the client was a victim of a sting by federal task force.

Result: Jury found client not guilty
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Personal Injury

Massachusetts • New York

Life changes after a serious personal injury. If you were injured by the negligence of another person or company, you have the right to seek financial compensation for your injuries, expenses and lost wages. Our nationally recognized injury attorneys have obtained significant compensation in high-profile accident cases involving serious injuries, helping thousands of injured people get the compensation they deserve.

We handle all types of motor vehicle accidents, from car crashes to commercial vehicle incidents, ensuring you receive full compensation for your injuries and damages.

  • Car Accidents
  • Tractor Trailer Accidents
  • Motorcycle Accidents
  • Recreational Vehicle Accidents
  • Uninsured & Under Insured Motorist
  • Drunk Driving Car Accidents

When medical professionals fail to provide proper care, we hold them accountable for their negligence and fight for the compensation you deserve.

  • Birth Injuries
  • Medication Errors
  • Failure to Diagnose
  • Surgical Errors and Informed Consent
  • Nursing Home Neglect and Abuse
  • Bay State Medical Center
  • Implant Defects

We specialize in catastrophic injury cases that require extensive medical care, rehabilitation, and long-term support.

  • Brain Injury
  • Spinal Cord / Back Injuries
  • Amputation / Loss of Limb
  • Wrongful Death
  • Scarring

We help injured workers navigate complex workers' compensation and third-party liability claims to ensure maximum recovery.

  • Construction Site Accidents
  • Explosions
  • Injuries and OSHA Violations
  • Workers' Compensation
  • Third Party Injury Cases

Property owners have a duty to maintain safe premises. We hold them accountable when their negligence causes injuries.

  • Slip and Fall Accidents
  • Dog Bites and Scarring
  • Amusement Park Accidents
  • Product Liability

We are known for undertaking complex personal injury cases characterized by multiple legal issues, catastrophic injuries and public notoriety.

  • Big Dig Accidents
  • Aviation and Mass Transit Accidents
  • Complex Multi-Party Cases
  • Class Action Lawsuits

Notable Case Results

Springfield Foundry Explosion

Nine men were injured and three killed in a foundry explosion in Springfield in 1999. Our client lost his life when an explosion in the shell molding department blew out walls and lifted part of the roof. A lawsuit was filed on behalf of the workers against the parent company, and the suit was settled after a week of mediation.

Result: $2.44 million awarded to the estate of a worker

Social Host Liability and Auto Accident

Our client was a junior in high school who attended a keg party at the home of another high school student while the student's parents were not at home. An obviously intoxicated underage boy left the party and hit and injured our client. We successfully defeated the defendants' motion to dismiss by arguing social host liability.

Result: $150,000 settlement after motion to dismiss was defeated

HIV and Medical Negligence

Our male client had contracted the HIV virus, which was recorded in his medical records. These medical records were negligently placed in the wrong patient's file and into another patient's hands. As a result, word of our client's HIV status quickly spread through the community, causing him to become embarrassed, depressed and ultimately causing him to withdraw from his daily activities.

Result: Jury found for the Plaintiff in privacy breach case
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Civil Rights Defense

Discrimination · Police Brutality & Misconduct · Government Persecution

The civil rights attorneys at Jeffrey Denner & Associates, L.L.P. protect the constitutional rights, civil rights, and human rights of citizens and residents of the U.S. The firm handles civil rights and hate crimes cases across the nation and internationally, for individuals and as class action lawsuits and has collected numerous multi-million dollar verdicts and settlements.

Federal, state, and local laws protect people from employment discrimination, housing discrimination, and harassment because of gender, race, ethnicity, and sexual orientation. Despite these laws, people of color and GLBT persons frequently experience discrimination in employment and housing.

Employment discrimination can happen at any level of a company. Women executives might be held to a different standard of work performance than men, for example, or minority sales people might be given the worst sales territories. Discrimination cases can be difficult to prove and often involve a group of workers joining together in a class action suit.

There are specific procedures for bringing complaints of civil rights violations, discrimination, or a hostile work environment to the attention of the government. Whether to file a case with a local authority or with the federal government is a decision that should be discussed with a knowledgeable civil rights defense attorney.

Hundreds of people are illegally profiled, wrongfully arrested, injured, or killed every year by brutal police actions. Charges can be brought against police officers who violate the civil rights of people who have committed a crime, persons who are only suspected of a crime, and innocent bystanders.

  • Police Brutality
  • Unlawful Arrest
  • Wrongful Prosecution
  • Excessive Force
  • False Imprisonment
  • Racial Profiling

We represent people who have been subjected to unlawful government actions and protect the rights of people who have been targeted by the government's war on terror, including providing legal defense to persons facing military tribunals.

  • Unlawful Government Wire Tapping
  • Unlawful Electronic Surveillance
  • Prosecution with False Information
  • Unlawful Incarceration
  • Military Tribunals
  • War on Terror Defense

We handle hate crime cases across the nation and internationally, representing individuals and as class action lawsuits to protect victims of bias-motivated crimes.

  • Racial Hate Crimes
  • Religious Hate Crimes
  • Sexual Orientation Hate Crimes
  • Gender Identity Hate Crimes
  • Disability Hate Crimes
  • Class Action Hate Crime Cases

Notable Results

Multi-Million Dollar Verdicts and Settlements

Our civil rights attorneys have collected numerous multi-million dollar verdicts and settlements for clients whose constitutional and civil rights have been violated.

Result: Multiple multi-million dollar recoveries for civil rights violations

Class Action Lawsuits

We have successfully represented groups of individuals in class action lawsuits against government entities and corporations for systematic civil rights violations.

Result: Successful class action settlements protecting groups of victims
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Divorce & Family Law

At Jeffrey Denner & Associates, L.L.P., we help clients find solutions in divorce and a wide range of family law challenges. From high-asset property agreements to out-of-state relocation in child custody cases, our legal team is prepared to handle issues of any degree of complexity with skill and sensitivity. Our family law attorneys work to protect your finances, your rights, and your most important relationships.

We handle all aspects of divorce proceedings, from simple uncontested divorces to complex high-asset cases involving business interests and complex financial arrangements.

  • Divorce and Dissolution
  • Legal Separation
  • High-Asset Divorce
  • Tax Issues in Divorce
  • Disability Issues in Divorce
  • Modification of Final Orders

We keep the best interests and safety of children at the forefront of any divorce or child custody case. We can consult with child psychologists, education advocates, and other professionals when difficult issues arise involving children.

  • Custody and Child Support
  • Visitation Rights
  • Special Needs Children in Divorce
  • Paternity Issues
  • Visitation / Removal
  • Child Relocation Cases

Our lawyers can access financial experts — such as forensic accountants and appraisers — to value complex assets in a marital estate, such as closely held or family businesses, pension plans, and real estate interests.

  • Division of Assets
  • Alimony / Spousal Support
  • Financial Settlement in lieu of alimony or child support
  • Business Valuation in Divorce
  • Pension and Retirement Asset Division
  • Real Estate Division

We provide comprehensive family law services for same-sex couples and non-traditional families, understanding the unique legal challenges they may face.

  • Same-Sex Marriage and Divorce
  • Non-Traditional Family Structures
  • LGBTQ+ Family Law Issues
  • Domestic Partnership Dissolution
  • Adoption and Surrogacy

We help couples protect their assets and clarify financial expectations through well-drafted prenuptial and postnuptial agreements.

  • Prenuptial Agreements
  • Postnuptial Agreements
  • Challenges to Prenuptial Agreements
  • Asset Protection Planning
  • Estate Planning Integration

We help clients navigate the complex process of restraining orders, whether defending against them or seeking protection for clients and their families.

  • Restraining Orders
  • Domestic Violence Protection
  • Emergency Protective Orders
  • Child Protection Orders
  • Order Violations

Our Family Law Team

Experienced Family Law Attorneys

Our dedicated family law team includes experienced attorneys who understand the emotional and financial complexities of family law matters.

  • Jeffrey A. Denner
  • Hope C. Button
  • Kathleen A. O'Malley

Comprehensive Support Services

We provide comprehensive support throughout the legal process, working with financial experts, child psychologists, and other professionals to ensure the best possible outcomes for our clients and their families.

Result: Skilled representation with access to expert resources
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Business Law

Transactions • Legal Counsel • Litigation

The law firm of Jeffrey Denner & Associates, L.L.P., is a multistate law practice with the resources, experience and skill to handle a wide range of business transactions, complex mergers, and business litigation throughout the region and across the country. Our goal in every business matter is to preserve our clients' bottom lines while protecting and furthering their business interests.

We help entrepreneurs and business owners establish their companies with proper legal structure and documentation to protect their interests and ensure compliance.

  • Starting a Business
  • Business Formation
  • Corporations
  • Partnerships
  • LLCs and Other Entities
  • Business Planning and Structure

We handle complex mergers and acquisitions for national and international clients, ensuring smooth transactions that protect your business interests.

  • Mergers and Acquisitions
  • Due Diligence
  • Asset Purchases
  • Stock Purchases
  • Joint Ventures
  • Strategic Partnerships

We provide comprehensive contract services, from drafting and review to litigation, ensuring your business agreements protect your interests.

  • Business Contracts
  • Contract Drafting and Review
  • Contract Litigation
  • Commercial Agreements
  • Service Agreements
  • Vendor Contracts

We handle all aspects of commercial and residential real estate transactions and disputes, protecting your property interests.

  • Commercial Real Estate
  • Residential Real Estate
  • Real Estate Litigation
  • Property Acquisitions
  • Lease Negotiations
  • Real Estate Disputes

We represent employers in employment law matters, including defense against wrongful termination claims and compliance with employment regulations.

  • Employment Law Matters
  • Wrongful Termination Defense
  • Employment Contracts
  • Workplace Policies
  • Employment Compliance
  • Labor Relations

We defend business professionals facing disciplinary actions and represent clients in business disputes to protect their professional reputation and livelihood.

  • Professional License Defense
  • Partnership Disputes
  • Insurance Disputes
  • Securities Defense
  • Business Litigation
  • Regulatory Compliance

Our Business Law Approach

Multistate Practice

From our offices in Boston and Springfield, Massachusetts, Jeffrey Denner & Associates has built a business law practice that goes far beyond our Massachusetts roots. We bring a wealth of business experience to any transaction, large or small.

Result: Comprehensive business law services across multiple states

Client-Focused Approach

We listen carefully, determine the client's goals, and strive to obtain the best possible result in every business matter. Our goal is to preserve our clients' bottom lines while protecting and furthering their business interests.

Result: Tailored legal solutions that protect and advance business interests
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Military Law

Military Courts & Military Services

The Massachusetts military crime defense attorneys at Jeffrey Denner & Associates, L.L.P. provide legal defense to people who have become involved in legal matters with the U.S. Department of Defense, including military and non-military personnel, American citizens, and internationals. Led by law firm founder Attorney Jeffrey Denner, we ensure that our clients' constitutional rights, civil rights, and human rights are protected to the greatest extent possible.

Army, Navy, Air Force, and Marine personnel who commit crimes in the course of military duty or while off duty are subject to military penalties through non-judicial procedures, Article 15, or the process of military court-martial.

A military attorney will be assigned to defend you, but some armed services personnel choose to bring a civilian attorney for the defense effort as well. Whether you are facing special court-martial, general court-martial, or an administrative elimination proceeding, our military crime defense attorneys can work with your military attorney on misdemeanor and felony cases in military courts.

  • Court-Martial Defense
  • Article 15 Proceedings
  • Administrative Elimination
  • Non-Judicial Punishment
  • High-Profile Military Crimes
  • Civilian Court Representation

We represent people who for reasons of health, mental health, or conscience cannot, will not, or will no longer serve in the military and seek a military discharge.

  • Medical Discharge
  • Mental Health Discharge
  • Conscientious Objector
  • Administrative Discharge
  • Discharge Upgrade
  • Discharge Review Board

We provide criminal defense for Americans and foreign nationals who have been identified as enemy combatants in the war on terror and who face criminal charges for terrorism before military tribunals.

  • Terrorism Charges
  • Military Tribunals
  • War on Terror Defense
  • Enemy Combatant Status
  • International Defense
  • Constitutional Rights Protection

We have extensive experience navigating the complex military justice system, ensuring our clients receive fair treatment and the best possible defense.

  • Uniform Code of Military Justice (UCMJ)
  • Military Court Procedures
  • Evidence in Military Cases
  • Appeals Process
  • Military Investigation Defense
  • Chain of Command Issues

Our Military Law Expertise

Led by Founder Jeffrey Denner

Our military law practice is led by law firm founder Attorney Jeffrey Denner, ensuring that our clients receive the highest level of representation and that their constitutional rights, civil rights, and human rights are protected to the greatest extent possible.

Result: Experienced leadership in military law matters

Nationwide and International Representation

From our offices in Boston and Springfield, Massachusetts, Jeffrey Denner & Associates attorneys provide comprehensive, knowledgeable legal representation to people across the nation and internationally in military law matters.

Result: Comprehensive military law services with national and international reach

High-Profile Military Cases

Our attorneys have represented military personnel charged with high-profile crimes, from rape to murder to drug crimes, in civilian courts in the U.S. and internationally, demonstrating our ability to handle complex and sensitive military cases.

Result: Proven track record in high-profile military cases
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State Treasurer Corruption Case

Commonwealth of Massachusetts vs. Timothy Cahill

Mistrial Declared, All Charges Dismissed

Case Overview

Timothy Cahill, the former Massachusetts State Treasurer, was charged with corruption and ethics violations. The case involved allegations of using state resources for political purposes during his campaign for governor.

Legal Strategy

Our defense team successfully argued that the prosecution's case was built on circumstantial evidence and failed to meet the burden of proof required for criminal conviction. We demonstrated that Mr. Cahill's actions, while politically controversial, did not constitute criminal conduct under Massachusetts law.

Key Legal Issues

  • Separation of political and official duties
  • First Amendment protections for political speech
  • Burden of proof in corruption cases
  • Ethics law interpretation

Outcome

The jury was unable to reach a unanimous verdict, resulting in a mistrial. Following the mistrial, all charges were dismissed, and Mr. Cahill was cleared of any criminal wrongdoing.

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Big Dig Tunnel Collapse

Estate of Del Valle v. Multiple Defendants

$28.1 Million Awarded

Case Overview

This tragic case involved the death of Milena Del Valle, who was killed when concrete ceiling panels collapsed in the Big Dig tunnel in Boston. The case involved complex liability issues across multiple contractors, engineers, and government entities.

Legal Strategy

Our team conducted extensive investigation into the construction defects, safety violations, and regulatory failures that led to the collapse. We successfully demonstrated that multiple parties were negligent in their duties to ensure public safety.

Key Legal Issues

  • Construction defect liability
  • Government contractor immunity
  • Wrongful death damages
  • Multiple defendant liability
  • Public safety regulations

Outcome

After extensive litigation and negotiation, we secured a $28.1 million settlement for the Del Valle family, one of the largest wrongful death settlements in Massachusetts history.

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High-Profile Murder Case

Commonwealth of Massachusetts v. Edmund Burke

All Charges Dismissed + $400K Award

Case Overview

Edmund Burke was charged with first-degree murder in a high-profile case that received significant media attention. The prosecution's case relied heavily on circumstantial evidence and witness testimony.

Legal Strategy

Our defense team conducted a thorough investigation that revealed significant flaws in the prosecution's case, including unreliable witness testimony and improperly handled evidence. We successfully challenged the credibility of key prosecution witnesses.

Key Legal Issues

  • Constitutional rights violations
  • Evidence handling procedures
  • Witness credibility
  • Prosecutorial misconduct
  • Civil rights violations

Outcome

All criminal charges were dismissed due to prosecutorial misconduct and constitutional violations. Additionally, Mr. Burke received a $400,000 settlement for civil rights violations and wrongful prosecution.

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Federal Police Officer Trial

U.S. vs. LaFleur

Not Guilty Verdict

Case Overview

Federal police officer LaFleur was charged with federal crimes related to alleged misconduct while on duty. The case involved complex federal law issues and significant media scrutiny.

Legal Strategy

Our defense focused on demonstrating that the officer's actions were within the scope of his duties and protected by qualified immunity. We successfully challenged the prosecution's interpretation of federal law and demonstrated that no criminal conduct occurred.

Key Legal Issues

  • Federal law interpretation
  • Qualified immunity defense
  • Federal jurisdiction
  • Law enforcement procedures
  • Constitutional protections

Outcome

The jury returned a unanimous "Not Guilty" verdict on all charges, clearing Officer LaFleur of any criminal wrongdoing and allowing him to continue his law enforcement career.